BOULT Z40 Pro Earbuds Review: 100-Hour Battery Meets Bass Power

BOULT Z40 Pro offers 100-hour playtime, Quad-Mic ENC, 45ms low-latency gaming, 13mm bass drivers, and IPX5 rating—perfect for gamers, music lovers, and professionals.

Review
31. Jul 2025
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BOULT Z40 Pro Earbuds Review: 100-Hour Battery Meets Bass Power















The BOULT Z40 Pro True Wireless Earbuds take everything great about their predecessor and elevate it to the next level. Proudly made in India, these earbuds are packed with features that cater to music lovers, gamers, and everyday users alike. With an industry-leading 100 hours of playtime, Quad-Mic ENC for crystal-clear calls, 13mm bass drivers, and a 45ms low latency gaming mode, the Z40 Pro is built for performance and comfort. Wrapped in a stylish premium rubberized case, this TWS offering stands out not just in function, but also in form.

BOULT Z40 Pro Earbuds Features

BOULT Z40 Pro Features

BOULT Z40 Pro Features 

100-Hour Total Battery Life

The Z40 Pro sets a new benchmark in battery performance with up to 100 hours of total playtime. Whether you're commuting, gaming, working, or traveling, these earbuds are designed to keep up with your lifestyle for days on a single charge.

Quad-Mic ENC for Call Clarity

Call quality is enhanced with Quad-Mic Environmental Noise Cancellation (ENC). Four microphones work together to block background noise and deliver clear voice transmission, even in noisy surroundings.

45ms Low Latency Gaming Mode

Designed for gamers, the 45ms ultra-low latency ensures real-time audio synchronization during gameplay. Activate Gaming Mode for an edge in competitive environments, where every millisecond counts.

Dynamic 13mm Bass Drivers

Audio performance is driven by 13mm dynamic drivers that produce deep, punchy bass along with balanced mids and highs. Whether you're streaming music or watching movies, the sound remains immersive and high-quality.

Premium Rubber Grip Case

The Z40 Pro comes with a rubberized case that not only enhances grip but also adds a sleek, premium look. It’s durable, stylish, and easy to carry on the move.

Feather-Touch Controls

Control your music, adjust volume, take calls, or activate voice assistants effortlessly with feather-touch controls on the earbuds. The controls are intuitive and responsive, enhancing user experience.

Type-C Fast Charging

Running out of battery? With Type-C fast charging, a short plug-in gives you hours of playback—ideal for people constantly on the move.

Bluetooth 5.3 Connectivity

Stay connected with Bluetooth 5.3, which provides faster pairing, a more stable signal, and wider range. Whether you're connecting to a smartphone, laptop, or tablet, the connection remains seamless.

IPX5 Water Resistance

With an IPX5 rating, the Z40 Pro is resistant to sweat and splashes, making it suitable for workouts, running, and even light rain.

Made in India Excellence

The BOULT Z40 Pro reflects the brand’s commitment to local innovation. Designed and manufactured in India, these earbuds cater specifically to Indian users’ expectations in performance and value.

BOULT Z40 Pro Earbuds Price in India

The BOULT Z40 Pro earbuds are available at an introductory price of ₹1,199. Considering the massive battery life, quad-mic ENC, gaming features, and audio quality, this price delivers outstanding value. The earbuds are available on Amazon and various online platforms across India.

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BOULT Z40 Pro Earbuds Review

In real-world usage, the BOULT Z40 Pro excels in nearly every area. The audio output is rich and immersive, especially for bass lovers. The 13mm drivers produce a wide soundstage, with a clear distinction between lows, mids, and highs.

Where the Z40 Pro really shines is in its battery life. With 100 hours of total playtime, users can go several days—if not weeks—without needing a recharge. This makes them especially practical for travelers and heavy users.

Call quality is a step up from standard TWS earbuds, thanks to the Quad-Mic ENC setup. Whether you're walking down a noisy street or taking a meeting from a café, your voice remains crisp and audible.

Gamers will appreciate the 45ms latency, which provides tight audio sync in games like PUBG or Call of Duty Mobile. The rubberized case not only looks premium but also provides a secure, non-slip grip, adding to the everyday practicality of the product.

In terms of comfort, the earbuds are lightweight and ergonomically designed to stay secure even during workouts or long calls. Bluetooth 5.3 offers reliable and fast pairing across various devices with no connection drops.

BOULT Z40 Pro Earbuds Pros and Cons

Pros

  • Exceptional 100-hour battery life
  • Crystal-clear calls with Quad-Mic ENC
  • Rich audio with 13mm bass drivers
  • Gaming mode with ultra-low 45ms latency
  • Fast Type-C charging and Bluetooth 5.3
  • Premium design and IPX5 water resistance

Cons

  • No active noise cancellation (ANC)
  • Slightly bulky charging case compared to ultra-compact models

Should You Buy BOULT Z40 Pro Earbuds?

If you're looking for high-performance earbuds that don’t compromise on features or price, the BOULT Z40 Pro is a smart buy. From ultra-long battery life and gaming-grade latency to excellent call clarity and premium design, this TWS product checks all the right boxes. Whether you're a music enthusiast, gamer, or remote worker, these earbuds offer serious value under ₹1,200.

Final Verdict

The BOULT Z40 Pro raises the bar in the affordable TWS market in India. With premium features like 100-hour playtime, quad-mic ENC, 13mm bass drivers, and IPX5 water resistance, it caters to a wide audience—from daily commuters to gamers. Designed with care and built for performance, it proves that premium experiences can come at budget-friendly prices. If you want reliable, feature-rich wireless earbuds that punch above their weight, the Z40 Pro deserves a spot at the top of your list.

FAQs

Q1. How long does the BOULT Z40 Pro battery last?

The BOULT Z40 Pro delivers up to 100 hours of total playtime, making it ideal for heavy users, long trips, or extended use without daily charging.

Q2. Does BOULT Z40 Pro support noise cancellation?

Yes, it includes Quad-Mic Environmental Noise Cancellation (ENC) for enhanced call clarity, but it does not feature active noise cancellation (ANC).

Q3. Is the BOULT Z40 Pro good for gaming?

Yes, with its 45ms ultra-low latency gaming mode, the Z40 Pro offers highly responsive and synchronized audio—great for mobile and casual gaming.

Q4. Are the BOULT Z40 Pro earbuds water-resistant?

Yes, they come with an IPX5 water resistance rating, making them suitable for workouts, light rain, and daily active use.

Q5. What makes BOULT Z40 Pro a good buy at ₹1,199?

Its 100H battery, 13mm bass drivers, quad-mic ENC, low latency, and premium grip case make the Z40 Pro one of the best-value TWS earbuds under ₹1,200.

Note - We can not guarantee that the information on this page is 100% correct. Some content may have been generated with the assistance of AI tools like ChatGPT.

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Rishabh Sinha
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